hi,

The following error message sometimes appears on my server log,it causes the mailbox to exceed the disk capacity limit.

May 9 09:54:11 imap dovecot: imap(hfh@cndns.com): Error: dict-client: Lookup 'priv/quota/storage' failed: Connection closed: read(size=8192) failed: Connection reset by peer (reply took 2.728 secs (2.729 in dict wait, 0.000 in other ioloops, 0.000 in locks))

dovecot -n

# 2.2.36 (1f10bfa63): /etc/dovecot/dovecot.conf # Pigeonhole version 0.4.24 (124e06aa) # OS: Linux 2.6.32-504.el6.x86_64 x86_64 CentOS release 6.6 (Final) # Hostname: imap3bak.sh.chengmail.me auth_master_user_separator = * auth_mechanisms = PLAIN LOGIN deliver_log_format = msgid=%m, subject=%s, from=%f, %$ dict { acl = mysql:/etc/dovecot/dovecot-share-folder.conf quotadict = mysql:/etc/dovecot/dovecot-used-quota.conf } disable_plaintext_auth = no first_valid_uid = 2000 last_valid_uid = 2000 listen = * mail_fsync = never mail_gid = 2000 mail_location = maildir:/%Lh/Maildir/:INDEX=/%Lh/Maildir/ mail_plugins = quota lazy_expunge zlib mail_uid = 2000 managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date index ihave duplicate mime foreverypart extracttext mmap_disable = yes namespace { list = children location = maildir:/%%Lh/Maildir/:INDEX=/%%Lh/Maildir/Shared/%%u prefix = Shared/%%u/ separator = / subscriptions = yes type = shared } namespace { hidden = yes list = no location = maildir:/var/vmail/backup/expunged/%d/%n prefix = .DELETED/ separator = / } namespace inbox { inbox = yes location = mailbox Drafts { auto = subscribe special_use = \Drafts } mailbox Junk { auto = subscribe special_use = \Junk } mailbox Sent { auto = subscribe special_use = \Sent } mailbox Trash { auto = subscribe special_use = \Trash } prefix = separator = / } passdb { args = /etc/dovecot/dovecot-mysql.conf driver = sql } passdb { args = /etc/dovecot/dovecot-fallback-password-mysql.conf driver = sql } passdb { args = /etc/dovecot/dovecot-fallback-mysql.conf driver = sql } passdb { args = /etc/dovecot/dovecot-master-users-password driver = passwd-file master = yes } plugin { acl = vfile:/etc/dovecot/dovecot-acl acl_globals_only = yes auth_socket_path = /var/run/dovecot/auth-master lazy_expunge = .DELETED/ quota = dict:user::proxy::quotadict quota_grace = 0%% quota_max_mail_size = 70M quota_rule = *:storage=1G quota_rule2 = *:messages=0 quota_warning = storage=85%% quota-warning 85 %u quota_warning2 = storage=90%% quota-warning 90 %u quota_warning3 = storage=95%% quota-warning 95 %u sieve = /%Lh/sieve/dovecot.sieve sieve_default = /var/vmail/sieve/dovecot.sieve sieve_default_name = managesieve sieve_dir = /%Lh/sieve } protocols = pop3 imap sieve service anvil { client_limit = 20500 } service auth { client_limit = 20500 unix_listener /var/spool/postfix/dovecot-auth { group = postfix mode = 0666 user = postfix } unix_listener auth-master { group = vmail mode = 0666 user = vmail } unix_listener auth-userdb { group = vmail mode = 0660 user = vmail } } service dict { unix_listener dict { group = vmail mode = 0660 user = vmail } } service imap-login { process_min_avail = 24 service_count = 0 vsz_limit = 2 G } service imap { process_limit = 1024000 process_min_avail = 24 vsz_limit = 2 G } service pop3-login { service_count = 0 } service quota-warning { executable = script /usr/local/bin/dovecot-quota-warning.sh unix_listener quota-warning { group = vmail mode = 0660 user = vmail } } ssl_ca = </etc/pki/tls/certs/cndns.com.ca-bundle ssl_cert = </etc/pki/tls/certs/cndns.com.crt ssl_key = # hidden, use -P to show it syslog_facility = local6 userdb { args = /etc/dovecot/dovecot-mysql.conf driver = sql } userdb { args = /etc/dovecot/dovecot-fallback-user-mysql.conf driver = sql } protocol lda { auth_socket_path = /var/run/dovecot/auth-master lda_mailbox_autocreate = yes mail_fsync = optimized mail_plugins = quota lazy_expunge zlib sieve postmaster_address = root syslog_facility = local6 } protocol imap { imap_client_workarounds = tb-extra-mailbox-sep imap_id_send = NAME dovecot VERSION 2.1.17 mail_max_userip_connections = 20 mail_plugins = quota lazy_expunge zlib imap_quota mail_log imap_zlib notify } protocol pop3 { mail_max_userip_connections = 20 mail_plugins = quota lazy_expunge zlib mail_log notify pop3_client_workarounds = outlook-no-nuls oe-ns-eoh pop3_uidl_format = %08Xu%08Xv }

hfh@cndns.com